She's causing a stir as one of the new judges on The X Factor with her feisty attitude and on-the-ball remarks.And yesterday Tulisa Contostavlos also managed to cause a stir as she showed off her tanned and toned figure while arriving back at London's Heathrow Airport after a short break in Madrid.The 23-year-old singer donned a tiny pair of shorts and a loose white floral T-shirt as she made her way home after her flight.

Tanned and toned: X Factor judge Tulisa Contostavlos showed off her slender figure as she arrived at a London airport yesterday

Tulisa appeared to have squeezed in some sunbathing on her trip, and displayed a golden tan as she strolled through the airport.The N-Dubz singer also appeared to have lost some weight, looking noticeably slimmer than she did back in June.On Saturday night's X Factor show, Tulisa was seen getting angry with one member of girlband Angel after they answered back following her negative comments after their audition.And Tulisa's fellow judge Kelly Rowland said she is expecting there to be some 'fireworks' when the live shows start next month.

Slimline: Tulisa looked noticeably slimmer than she did at the X Factor auditions back in June

She said: 'Tulisa is a really ­opinionated confident woman, Gary says what he means, and look at the fights Louis and Simon Cowell used to have.'I am so blessed to be working with three people I get on with so well.I love Louis, he is just so adorable and his "head judge" mug means so much to him.'It's so funny watching him and Gary fight over the mug.'But while Kelly is predicting things might not always go smoothly on the live shows, one person who will be there to stick up for Tulisa is her cousin, and N-Dubz bandmate, Dappy.

Feisty! Tulisa has been keeping X Factor viewers entertained with her on-the-ball comments

Fresh faces: The new panel, including Gary Barlow and Kelly Rowland, have received praise from X Factor viewers

Dappy told the Sunday Mirror: ''I'll definitely be getting tickets to the show but I can't be watching anyone talking badly to Tulisa, otherwise I'll be running on to that stage.'Dappy added he has already picked the perfect category for Tulisa to mentor, saying: 'Groups is the best category for her. If anyone knows the most about being in a group it's her.'And another person who is enjoying Tulisa's role on the new panel is former X Factor contestant Stacey Solomon, who dismissed any similarities between Tulisa and former judge Cheryl Cole.She said: 'I don't think there's any resemblance between Tulisa and Cheryl at all. There'll always be that pressure because it's a massive spot to fill, but Tulisa looks great, she's doing perfectly.'Talking about the other judges, Stacey added: 'I think Kelly has surprised everyone a little with her opinions actually. 'You really want to hear what she's got to say, and I never thought I would but I love her comments, I think they're really accurate, spot on.'